Panasonic FZ60 has a
16.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CMOS sensor . On the other hand, Panasonic ZS70 has a
20.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features Venus Engine processor.
Below you can see the FZ60 and ZS70 sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic FZ60 and Panasonic ZS70 Cameras
Panasonic FZ60 and Panasonic ZS70 have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the same focal length and aperture.
Sensor size sets the circle of confusion, so it drives how much depth of field each
of these bodies gives you at a given aperture. You can calculate it exactly for the
Panasonic FZ60
or the
Panasonic ZS70 ,
including hyperfocal distance.